The Japanese Virtual Observatory in action

The Japanese Virtual Observatory (JVO) is a web portal for astronomical data and analysis system, and utilizes the standards developed by the IVOA to communicate with the VO-compliant resources in the world. We have started official operation of the JVO since March 2008 at http://jvo.nao.ac.jp/portal/. The JVO provides the following web-based services: 1. search for VO-compliant data services in the world, 2. search and access to the astronomical data through the VO standard interfaces, 3. use of on-line astronomical analysis tools, 4. online data reduction for the Subaru telescope, 5. use of data storage of the JVO system. We also operate several VO data services (SkyNode, SIA, SSA) and a publishing registry. As of January 22 of 2009, over 1,900 resources in the world are registered to the JVO portal. More than 40 thousands pages are requested to the JVO system every month. 1.6 TB of data have been downloaded since the start of the official operation. GRID computing system is introduced to provide massive computing resource for reducing the data obtained by the Subaru telescope. In the initial operation, we offer 48 CPU cores, 4 GB memory per core, 1 TB of locally attached hard disk and 100 TB of NFS storage area in the GRID computing system.